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Interrupts in 8051

Ravinder Nath Rajotiya — Fri, 03 Dec 2021 10:05:38 +0000

Interrupts in 8051 What is an Interrupt: It is a requesting mechanism for the peripherals to make the microcontroller interrupt the currently executing program and run the program to service the request. The program that is run upon the interrupt is called an ISR (interrupt service routine) Types of Interrupts in 8051 There are five...

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8051 Timers

Ravinder Nath Rajotiya — Fri, 03 Dec 2021 09:34:49 +0000

Timers in 8051 There are two timer in 8051, Timer-0, Timer-1;— Use of timers: To produce precise delay timing Counting the events Generating baud rate Registers associated with timer operation are: TMOD 89h TCON 88h TH0 8Ch TL0 8Ah TH1 8Dh TL1 8Bh Format of TMOD and TCON registers TMOD SFR (89h) Timer-1 Timer-0...

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8051 Internal Architecture

Ravinder Nath Rajotiya — Fri, 19 Apr 2019 11:01:24 +0000

8051 Internal Architecture 8051 microcontroller was developed by Intel in 1980s. It is an 8-bit controller and is based on Harvard Architecture which uses two separate memory for storing program and data. The internal architecture describes the organization of the internal components of 8051. Figure 5.1 shows the internal architecture of 8051. Internal components of...

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